Timken 100715V Differential Pinion Seal - Rear

Timken Differential Pinion Seal 100715V

Timken 100715V is a differential pinion seal built to retain gear oil at the pinion area while keeping dirt and road debris out of the axle assembly. With precise sealing dimensions and a reinforced outer case, it is a practical replacement for rear axle service on Ford E-350 Super Duty, Ford E-250, Ford F-250 Super Duty, and select Dodge Viper applications.

Key Features

• Outside diameter: 3.163 in. (80.34 mm)
• Shaft diameter: 1.874 in. (47.60 mm)
• Housing bore: 3.159 in. (80.24 mm)
• Width: 0.500 in. (12.70 mm)
• Reinforced outer case helps resist installation damage
• Ribbed rubber inner diameter helps seal minor spindle imperfections
• Internal contamination exclusion system helps block debris entry
• Vent holes promote lubricant flow around the seal lip to reduce heat buildup

Detailed Description

This Timken differential pinion seal is engineered for rear axle sealing where consistent lubricant retention matters. The precision sealing design helps prevent gear oil escape at the pinion while the reinforced case supports a more durable fit in the housing bore. The ribbed inner diameter is designed to seat securely against the shaft surface, and the contamination exclusion features help keep abrasive material away from the seal lip. Timken 100715V is a direct-fit service part for a wide range of rear axle applications, including 2000-2019 Ford E-350 Super Duty, 2008-2014 Ford E-150, 2003-2014 Ford E-250, and 1999-2006 Ford F-250 Super Duty. This part cross-references Gates 18741 and National 100715V for the same application.

What It Helps Address

• Rear differential pinion oil leakage
• Contamination entering the axle seal area
• Seal wear from heat buildup around the lip
• Loose or damaged sealing surfaces at the pinion shaft
• Service issues on Ford E-350 Super Duty, Ford E-250, and Ford F-250 Super Duty rear axles

Installation Notes and Tips

• Verify outside diameter, shaft diameter, housing bore, and width before installation.
• Inspect the pinion surface for grooves, corrosion, or burrs that could affect sealing.
• Clean the housing bore thoroughly so the seal seats evenly.
• Use proper seal installation tools to avoid distorting the outer case.
• Confirm axle configuration and ring gear application before ordering, especially on Ford E-Series and Dana/Spicer-equipped vehicles.

Quality Assurance

Timken designs oil and grease seals with precision sealing geometry and durability-focused construction for drivetrain service. Part number 100715V is built to meet the dimensional requirements listed above for rear differential pinion seal replacement.